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Join Date:

08-06-2011

Last Activity:

05-27-2017 1:37 PM

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67 Likes on 54 Posts 

LATEST ACTIVITY

  • Posted in thread: Digital Dividing Head and Slide on 04-09-2017 at 02:49 PM
    I would be very interested in the details of your build. As was noted, the images won't
    load.Lohring Miller

  • Posted in thread: Metric lathes in the US on 03-26-2017 at 02:21 PM
    I don;t have anything against metric threads and have taps and dies for many small sizes. They,
    along with UNF threads, are great in steel or cast iron. However, it's common to strip head
    bolts in mod...

  • Posted in thread: Metric lathes in the US on 03-25-2017 at 02:54 PM
    I am designing and building an engine with a nearly all metric design. It's a lot easier to
    avoid design mistakes with the mostly 2 digit integer dimensions a model size engine will use.
    All my equipm...

  • Posted in thread: Spam on 02-11-2017 at 02:39 PM
    Is anyone else getting spam messages on this site? I seem to be getting one a day starting
    yesterday.Lohring Miller

  • Posted in thread: 2-Stroke Design: Port Timing Round 2 on 02-06-2017 at 07:42 PM
    Low cost industrial engines use the porting system pictured below. The slugs in the pictures
    are guides for port modifications. The widths, angles, and timing are important. I can provide
    details if y...

  • Posted in thread: PatWankel Rotary Engine on 02-04-2017 at 02:55 PM
    I think you are on the right track, but making the seal "rings" with enough precision will be
    challenging. I still think the problem area will be where the spherical outer surface
    transitions to the f...

  • Posted in thread: PatWankel Rotary Engine on 01-24-2017 at 01:20 PM
    That will work with both cutting tools and a grinder mounted like common ball cutters. The next
    problem is machining the seal slots in the outer body. To follow the inner body their location
    and conto...

  • Posted in thread: PatWankel Rotary Engine on 01-12-2017 at 12:11 PM
    Thanks. For some reason I didn't realize that the seals were in the outer case. However,
    everything I said about an accurate and smooth surface is still true. It just needs to be on
    the inner element....

  • Posted in thread: Timing for SI 2-stroke? on 01-12-2017 at 12:01 PM
    QUB is Queens University of Belfast. The late Gordon Blair did a lot of the basic research
    there that lead to the modern two stroke design. Unlike most two stroke developers, he
    published his work and...

  • Posted in thread: Timing for SI 2-stroke? on 01-11-2017 at 04:15 PM
    This may be a little late, but a better design for a cross flow scavenged engine is the QUB
    crossflow design. It has a better combustion chamber shape and should be easier to
    build.Lohring Miller

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